:root{
  --line-green:#06C755;
  --line-green-dark:#04a544;
  --bg:#f4f5f7;
  --card:#ffffff;
  --ink:#2b2b2b;
  --ink-soft:#6b7280;
  --border:#e5e7eb;
  --gold:#c9962c;
  --gold-bg:#fff6e5;
  --premium:#6c4fd6;
  --premium-bg:#f1ecfd;
  --regular:#4b8bd6;
  --regular-bg:#e9f2fd;
  --radius:16px;
}

*{box-sizing:border-box;}

body{
  margin:0;
  font-family:"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
}

.page-head{
  max-width:960px;
  margin:0 auto;
  padding:32px 20px 16px;
  text-align:center;
}
.page-head h1{
  margin:0 0 6px;
  font-size:1.5rem;
}
.page-sub{
  margin:0 0 14px;
  color:var(--ink-soft);
  font-size:.95rem;
}
.notice{
  max-width:680px;
  margin:0 auto;
  font-size:.8rem;
  color:var(--ink-soft);
  background:#fffbea;
  border:1px solid #f5e6a8;
  border-radius:10px;
  padding:10px 14px;
}

.tabs{
  max-width:960px;
  margin:20px auto 0;
  padding:0 20px;
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  justify-content:center;
}
.tab-btn{
  border:1px solid var(--border);
  background:var(--card);
  color:var(--ink-soft);
  padding:10px 16px;
  border-radius:999px;
  font-size:.85rem;
  cursor:pointer;
  transition:.15s;
}
.tab-btn:hover{border-color:var(--line-green);}
.tab-btn.active{
  background:var(--line-green);
  border-color:var(--line-green);
  color:#fff;
  font-weight:700;
}

main{
  max-width:960px;
  margin:0 auto;
  padding:28px 20px 60px;
}

.tab-panel{display:none;}
.tab-panel.active{display:block;}

.panel-desc{
  text-align:center;
  color:var(--ink-soft);
  font-size:.9rem;
  margin:0 0 24px;
}

/* --- Phone frame --- */
.phone-frame{
  width:340px;
  margin:0 auto;
  background:#1c1c1e;
  border-radius:34px;
  padding:10px;
  box-shadow:0 20px 40px rgba(0,0,0,.18);
  position:relative;
}
.phone-frame.small{width:280px;}
.phone-notch{
  width:100px;
  height:18px;
  background:#1c1c1e;
  border-radius:0 0 12px 12px;
  margin:0 auto;
  position:relative;
  z-index:2;
}
.line-header{
  background:var(--line-green);
  color:#fff;
  font-weight:700;
  font-size:.9rem;
  padding:12px 14px;
  display:flex;
  align-items:center;
  gap:10px;
}
.line-back{font-size:1.1rem;}
.phone-screen{
  background:#f7f8fa;
  min-height:420px;
  padding:18px 14px;
  border-radius:0 0 22px 22px;
}

.member-card{
  border-radius:var(--radius);
  padding:20px;
  background:linear-gradient(135deg,var(--gold-bg),#fff);
  border:1px solid #eddcae;
  text-align:center;
  margin-bottom:16px;
}
.rank-badge{
  display:inline-block;
  background:var(--gold);
  color:#fff;
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.08em;
  padding:4px 12px;
  border-radius:999px;
  margin-bottom:10px;
}
.member-name{font-size:1.15rem;font-weight:700;}
.member-rank-label{color:var(--gold);font-size:.85rem;font-weight:600;margin-top:2px;}

.info-list{
  background:var(--card);
  border-radius:var(--radius);
  padding:4px 16px;
  margin-bottom:16px;
  border:1px solid var(--border);
}
.info-row{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:12px 0;
  border-bottom:1px solid var(--border);
  font-size:.85rem;
}
.info-row:last-child{border-bottom:none;}
.info-label{color:var(--ink-soft);}
.price-old{color:#b0b4bb;text-decoration:line-through;font-size:.78rem;margin-right:6px;}
.price-new{color:var(--line-green-dark);font-weight:700;}

.progress-block{
  background:var(--card);
  border-radius:var(--radius);
  padding:16px;
  border:1px solid var(--border);
  margin-bottom:16px;
}
.progress-text{font-size:.85rem;font-weight:700;margin-bottom:8px;}
.progress-text b{color:var(--premium);}
.progress-bar{
  background:#eceef1;
  border-radius:999px;
  height:10px;
  overflow:hidden;
}
.progress-fill{
  height:100%;
  background:linear-gradient(90deg,var(--gold),var(--premium));
  border-radius:999px;
}
.progress-scale{
  display:flex;
  justify-content:space-between;
  font-size:.72rem;
  color:var(--ink-soft);
  margin-top:6px;
}

.rank-table{
  background:var(--card);
  border-radius:var(--radius);
  border:1px solid var(--border);
  padding:14px 16px;
  margin-bottom:16px;
  font-size:.78rem;
  color:var(--ink-soft);
}
.rank-row{display:flex;align-items:center;gap:8px;padding:4px 0;}
.dot{width:9px;height:9px;border-radius:50%;display:inline-block;}
.dot.regular{background:var(--regular);}
.dot.gold{background:var(--gold);}
.dot.premium{background:var(--premium);}

.coupon-banner{
  background:#fff0f0;
  border:1px dashed #e8a3a3;
  color:#c74848;
  border-radius:12px;
  text-align:center;
  padding:12px;
  font-size:.85rem;
  font-weight:700;
}

/* --- Admin panel --- */
.admin-panel{
  background:var(--card);
  border-radius:var(--radius);
  border:1px solid var(--border);
  padding:20px;
  max-width:760px;
  margin:0 auto;
}
.admin-toolbar{
  display:flex;
  gap:10px;
  margin-bottom:16px;
  flex-wrap:wrap;
}
.search-box{
  flex:1;
  min-width:180px;
  padding:9px 12px;
  border:1px solid var(--border);
  border-radius:8px;
  font-size:.85rem;
}
.btn-primary{
  background:var(--line-green);
  color:#fff;
  border:none;
  padding:9px 16px;
  border-radius:8px;
  font-size:.85rem;
  font-weight:700;
  cursor:not-allowed;
  opacity:.9;
}
.btn-primary.full{width:100%;margin-top:6px;}

.customer-table{
  width:100%;
  border-collapse:collapse;
  font-size:.85rem;
}
.customer-table th{
  text-align:left;
  color:var(--ink-soft);
  font-weight:600;
  padding:8px 10px;
  border-bottom:2px solid var(--border);
  font-size:.78rem;
}
.customer-table td{
  padding:12px 10px;
  border-bottom:1px solid var(--border);
}
.highlight-row td{background:#f0fbf3;}

.rank-pill{
  display:inline-block;
  padding:3px 10px;
  border-radius:999px;
  font-size:.72rem;
  font-weight:700;
}
.rank-pill.regular{background:var(--regular-bg);color:var(--regular);}
.rank-pill.gold{background:var(--gold-bg);color:var(--gold);}
.rank-pill.premium{background:var(--premium-bg);color:var(--premium);}

.btn-edit{
  background:#fff;
  border:1px solid var(--line-green);
  color:var(--line-green-dark);
  padding:6px 12px;
  border-radius:8px;
  font-size:.75rem;
  cursor:pointer;
}
.btn-edit:hover{background:var(--line-green);color:#fff;}
.admin-note{
  margin-top:14px;
  font-size:.78rem;
  color:var(--ink-soft);
}

/* --- Coupon tab --- */
.coupon-layout{
  display:flex;
  gap:32px;
  justify-content:center;
  flex-wrap:wrap;
  align-items:flex-start;
}
.coupon-compose{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px;
  width:320px;
}
.form-row{margin-bottom:16px;}
.form-row label{
  display:block;
  font-size:.78rem;
  color:var(--ink-soft);
  font-weight:700;
  margin-bottom:8px;
}
.target-chips{display:flex;flex-wrap:wrap;gap:6px;}
.chip{
  border:1px solid var(--border);
  padding:6px 12px;
  border-radius:999px;
  font-size:.75rem;
  color:var(--ink-soft);
}
.chip.active{
  background:var(--line-green);
  border-color:var(--line-green);
  color:#fff;
  font-weight:700;
}
.text-input{
  width:100%;
  padding:9px 12px;
  border:1px solid var(--border);
  border-radius:8px;
  font-size:.85rem;
  color:var(--ink);
  background:#fafafa;
}

.coupon-preview{width:280px;}
.preview-label{
  text-align:center;
  font-size:.78rem;
  color:var(--ink-soft);
  font-weight:700;
  margin-bottom:10px;
}
.chat-bg{
  background:#8fc9e0;
  padding:16px 10px;
}
.chat-bubble{
  background:#fff;
  border-radius:0 12px 12px 12px;
  padding:12px;
  max-width:100%;
  box-shadow:0 2px 6px rgba(0,0,0,.08);
}
.chat-coupon-card{
  background:linear-gradient(135deg,#ffe1e1,#fff);
  border:1px solid #f3b8b8;
  border-radius:10px;
  padding:12px;
  margin-bottom:8px;
}
.chat-coupon-badge{
  display:inline-block;
  background:#e0554f;
  color:#fff;
  font-size:.65rem;
  font-weight:700;
  padding:2px 8px;
  border-radius:999px;
  margin-bottom:6px;
}
.chat-coupon-title{font-weight:700;font-size:.95rem;}
.chat-coupon-sub{font-size:.72rem;color:var(--ink-soft);margin-top:2px;}
.chat-text{font-size:.8rem;color:var(--ink);}

.page-foot{
  text-align:center;
  padding:24px 20px 40px;
  color:var(--ink-soft);
  font-size:.78rem;
}

@media (max-width:480px){
  .phone-frame{width:100%;max-width:340px;}
  .coupon-compose,.coupon-preview{width:100%;max-width:340px;}
}